fix(directive-parser) add support for bound attributes

tests/parsers/directive.parser.spec.ts

@@ -12,6 +12,55 @@ describe('DirectiveParser', () => {
 		parser = new DirectiveParser();
 	});
 
+
+	it('should extract keys when using literal map in bound attribute', () => {
+		const contents = `<div [translate]="{ key1: 'value1' | translate, key2: 'value2' | translate }"></div>`;
+		const keys = parser.extract(contents, templateFilename).keys();
+		expect(keys).to.deep.equal(['value1', 'value2']);
+	});
+
+	it('should extract keys when using literal arrays in bound attribute', () => {
+		const contents = `<div [translate]="[ 'value1' | translate, 'value2' | translate ]"></div>`;
+		const keys = parser.extract(contents, templateFilename).keys();
+		expect(keys).to.deep.equal(['value1', 'value2']);
+	});
+
+	it('should extract keys when using binding pipe in bound attribute', () => {
+		const contents = `<div [translate]="'KEY1' | withPipe"></div>`;
+		const keys = parser.extract(contents, templateFilename).keys();
+		expect(keys).to.deep.equal(['KEY1']);
+	});
+
+	it('should extract keys when using binary expression in bound attribute', () => {
+		const contents = `<div [translate]="keyVar || 'KEY1'"></div>`;
+		const keys = parser.extract(contents, templateFilename).keys();
+		expect(keys).to.deep.equal(['KEY1']);
+	});
+
+	it('should extract keys when using literal primitive in bound attribute', () => {
+		const contents = `<div [translate]="'KEY1'"></div>`;
+		const keys = parser.extract(contents, templateFilename).keys();
+		expect(keys).to.deep.equal(['KEY1']);
+	});
+
+	it('should extract keys when using conditional in bound attribute', () => {
+		const contents = `<div [translate]="condition ? 'KEY1' : 'KEY2'"></div>`;
+		const keys = parser.extract(contents, templateFilename).keys();
+		expect(keys).to.deep.equal(['KEY1', 'KEY2']);
+	});
+
+	it('should extract keys when using nested conditionals in bound attribute', () => {
+		const contents = `<div [translate]="isSunny ? (isWarm ? 'Sunny and warm' : 'Sunny but cold') : 'Not sunny'"></div>`;
+		const keys = parser.extract(contents, templateFilename).keys();
+		expect(keys).to.deep.equal(['Sunny and warm', 'Sunny but cold', 'Not sunny']);
+	});
+
+	it('should extract keys when using interpolation', () => {
+		const contents = `<div translate="{{ 'KEY1' + key2 + 'KEY3' }}"></div>`;
+		const keys = parser.extract(contents, templateFilename).keys();
+		expect(keys).to.deep.equal(['KEY1', 'KEY3']);
+	});
+
 	it('should extract keys keeping proper whitespace', () => {
 		const contents = `
 			<div translate>
@@ -120,4 +169,5 @@ describe('DirectiveParser', () => {
 		const keys = parser.extract(contents, templateFilename).keys();
 		expect(keys).to.deep.equal(['this is an example']);
 	});
+
 });